https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67328
--- Comment #6 from Yuri Gribov <tetra2005 at gmail dot com> --- (In reply to Oleg Endo from comment #5) > PR 67731 maybe related or dup? Related but not a dup. This bug is caused by frontend folding two bitfield accesses to a single comparison which prevented generation of bit test later in tree-opt.
